Valve actuating device



Dec. 3, 1935- G. M. LARDNER VALVE ACTUATING DEVICE Filed Jan. 18, 1935 Patented Dec. 3, 1935 UNITED STATES PATENT QFFICE VALVE ACTUATING DEVICE George Malcolm Lardner, Winnipeg, Manitoba, Can a My invention relates to improvements in valve operating devices for effecting periodic discharge of a liquid from a flushing tank.

By Letters Patent No. 2,007,453 granted to me and issued under date of July 9th,'1935, there is disclosed a mechanism whereby a valve may be periodically unseated from a valve opening in a flushing passage under actuation of a float and associated mechanism. Said device included a sleeve vertically shiftable by the float mechanism, arms carried by-the sleeve, a valve lifting rod, and yielding members interposed between the rod and arms to effect a vertical shifting of the rod inversely to the movement of the sleeve.

The present invention contemplates application of spring tension means to the arms on the vertically shiftable sleeve for effecting the shifting of the valve lifting rod.

To this end the device as herein disclosed provides rigid members in substitution for the yielding members of the previous disclosure and an arrangement of opposing pivotally mounted arms with spring tension means urging said arms together whereby through the medium of the rigid members the endwise thrust may be imparted to the valve lifting rod.

Other objects of the improvement will become apparent from the accompanying description taken in conjunction with the drawing wherein like characters of reference indicate like parts throughout the several views and wherein:

Fig. 1 is a side view in elevation of an apparatus embodying my improvements, a part of the apparatus being broken away to disclose the interior of the valve chamber and the valve, the latter being shown in unseated relation to the flushing passage opening. The view further shows part of a reservoir structure in which the apparatus would be mounted.

Fig. 2 is a view similar to that disclosed in Figure 1 but with the valve shown seated in closing relation to the opening of the flushing passage. The view further discloses the mounting of the valve lifting rod.

Fig. 3 is a. top plan view of the apparatus.

Having reference to the drawing there is disclosed an apparatus similar to that shown in the previous application as herein identified, but with certain alterations embodying my improvements.

In this showing I indicates the reservoir or flushing tank, 2 the discharge outlet pipe to which is attached a section 3 including the valve chamber 4 with communicating port 5. The chamber 4 includes the ports 6 for admission of liquid from the flushing tank. On the chamber 4 is a block '1 providing a bore in which is threaded a tubular guide member 8 On the guide member 8 is a vertically movable element including a cylindrical sleeve il on which is threaded a head block I 0.

Closure of the port 5 is effected by a valve l I adapted to be seated thereon. To the valve II is attached a lifting rod [2, said rod being vertically slidable suitable openings in the block 1, and headblock ID.

For ei fectoinga vertieal shifting of the sleeve 9 a float meehaniem is provided. On the block I is an integral lug I providing a reduced end portion [4 f orming'a bearing on which is mounted a rocking arm I5. A cap I6 is threaded into the end portion l4 serving to hold the arm H3 in place.

In W end of th r in arm i threaded a float carrying red I! with a float i8 of the usual hollow epnstruction secured thereto. The other end ef the rocking arm connects by a cross arm 2 and link 2] with an ear 22 integrally formed ater? .9.-

Pivqta .IFl Y, are? 9 h ro k n m W a a result of the rise or fall of the float li; whenliquid is introduced or discharged from the chamber l, produces, through the cross arm and link 2|, a. movement of the sleeve 9 inversely to the movement of the float.

The arrangement so far described corresponds to that disclosed in the previous application hereinbeforereferred to.

For imparting the endwise thrust to the valve lifting rod inversely to the movement of the vertically movable element, I provide an improved arrangement that is more economical to manufacture and more eflicient in operation, in that it applies the spring tension evenly balanced relative to the lifting rod.

In this arrangement there are provided lateral arms 23-43 forming an integral part of the head block 10. To the ends of the lateral arms are pivoted vertical arms 2424, the vertical arms being connected to be inwardly urged by a coiled spring 25. The lifting rod I2 has threaded on its upper end a block 25 with transverse grooves 21 formed in its sides. The arms 2 i24 are formed with intermediate grooves 28 in opposing relationship to the grooves 21, said grooves being adapted for reception of rigid blade members 29--29, the ends of which are of knife formation for effective engagement in said grooves.

The spring 25 is tensioned to impart the necessary thrust to the valve lifting rod for endwise 5 ment whereby the outer ends of said. blade members are carried above or below such position of balance causes an oppositely directed endwise thrust to be imparted to the valve lifting rod l2 through the medium of the blade members by contraction of the spring 25. This endwise movement serves to seat or unseat the valve H in the port 5.

Raising of the float serves to automatically unseat the valve l2. When the liquid is discharged from the reservoir allowing the float to drop a reverse movement is eifected and the valve re-seated to close the flushing outlet or port 5.

While I have herein described a certain specific embodiment of my improvement whereby application of spring tension means urging the vertical arms 2424 inward is disclosed, it is obvious that considerable variation in the construction and operation of the device would be permissible without departure from the spirit and scope of my invention as defined in the appended claims.

What I claim is:

1. In a flushing apparatus valve operating device embodying a valve lifting rod and a vertically movable element, pivotally mounted arms carried by the movable element, said arms being spaced apartwith the valve lifting rod aligned therebetween, rigid members interposed between said arms and rod, and spring means urging said arms together.

2. In a flushing apparatus valve operating device embodying a valve lifting rod and a vertically movable element, pivotally mounted arms carried by the movable element, said arms being spaced apart with the valve lifting'rod aligned therebetween, blade members interposed between said arms and rod, and spring means drawing said arms together.

3. In a valve operating device embodying a valve lifting rod and a movable element amociated therewith, said movable element carrying members mounted for lateral movement with respect thereto, blades engaged between the laterally movable members and rod, and spring means urging the laterally movable members inward relative to said rod, whereby movement of the movable element may be effective to impart an opposite endwise thrust to the valve lifting rod.

4. In a flushing apparatus valve operating device embodying a valve lifting rod and a vertically movable element, pivotally mounted arms carried by the movable element, said arms being spaced apart with the valve lifting rod aligned therebetween, blade 'members interposed engaged between said arms and rod, and a spring connecting said arms, said spring being ten-' ment may be effective to impart an opposite endwise thrust to said rod.

GEORGE MALCOLM LARDNER. 

